Awesome tutorial! I've been wanting to try gesso over foamcore in other projects but I never would have thought to use paper mâché or to stack it like that.
(I did alot of work with foamcore in my 3d design class so I'm a fan of that stuff)

Thank you!

Foamcore and craft foam are not exactly the same though, aren't they? Of course you could use foamcore covered in gesso or spackling paste for similar projects, if that's what you meant, but I think it would be too thick for this specific project.